OKorder Service Pledge

OKorder Service Pledge

Product Description:

Solar Cells:

solar cells, when struck by photons of light from the sun, generates an electrical current which can then be used to power DC or AC electrical loads.A solar cell is made of silicon. Computer chips are made of this same material. Basically, when light strikes the surface of a solar cell some of it is absorbed into the silicon. This light energy bumps the electrons loose and causes energy to flow

Solar cells is made by solar wafer, it has three categories of solar cell right now, monocrystalline polycrystalline and thin film,These cells are entirely based around the concept of PN junction, which is the critical part of solar module, it is the part that can convert the light energy into electricity, the thickness is from 180um to 200um, with even busbars to conduct electricity, textured cell can decrease diffuse reflection; they are often electrically connected and encapsulated as a module. Photovoltaic modules often have a sheet of glass on the front (sun up) side, allowing light to pass while protecting semiconductor wafers from abrasion and impact due to wind-driven debris, rain, hail, etc. Solar cells are also usually connected in series in modules, creating an additive voltage. Connecting cells in parallel will yield a higher current;With high quality and stable quality. Our Cells can greatly improve the performance of Solar Modules.

Specifications

Format

52x78mm±0.5mm

Diameter

220±0.5mm

Thickness

200±20um

Weight

2±0.5g

Front(-)

1.8mm bus bars (Silver)

Blue anti-reflecting coating (Silicon nitride)

Back (+)

3mm wide soldering pads (Silver)

Back surface field (aluminum).

Efficiency code

1720

1740

1760

1780

1820

1840

Efficiency (min)

(%)

17.2

17.4

17.6

17.8

18.2

18.4

Pmax

(W)

4.186

4.234

4.283

4.332

4.429

4.478

Voc

(V)

0.631

0.632

0.634

0.636

0.640

0.642

Isc

(A)

8.446

8.485

8.523

8.573

8.660

8.700

Vmp

(V)

0.525

0.527

0.529

0.531

0.535

0.537

Imp

(A)

7.973

8.035

8.097

8.160

8.280

8.340

Solar Cells Advantage:

• High efficiency and stable performance in photovoltaic conversion.• Advanced diffusion technique ensuring the homogeneity of energy conversion efficiency of the cell.• Advanced PECVD film forming, providing a dark blue silicon nitride anti-reflection film of homogenous color and attractive appearance.• High quality metal paste for back surface and electrode, ensuring good conductivity, high pulling strength and ease of soldering.• High precision patterning using screen printing, ensuring accurate busbar location for ease with automatic soldering a laser cutting.

FAQ

We have organized several common questions for our clients，may help you sincerely：

①What price for each watt?

It depends on the efficiency of the solar cell, quantity, delivery date and payment terms.

②How long can we receive the product after purchase?

In the purchase of product within three working days, We will arrange the factory delivery as soon as possible. The pecific time of receiving is related to the state and position of customers.Commonly 7 to 10 working days can be served.

③Can you provide the peripheral products of the solar panels, such as the battery, controller, and inverter? If so, can you tell me how do they match each other?

Yes, we can, we have two companies for solar region, one is CNBM International, the other is CNBM engineering Co.

We can provide you not only the solar module but also the off grid solar system, we can also provide you service with on grid plant.

④What is your warranty of solar cell?

Our product can promise lower than 0.3% open box crack, we support claim after opening the box if it has crackm color difference or sth, the buyer should give pictures immediately, we can not accept the claim after the solar cell has assembled to solar panel.

• Timeliness of delivery

• ⑤How do you pack your products?

We have rich experience on how to pack the solar cell to make sure the safety on shipment, we could use wooden box or pallet as buyer's preference.

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Q:My son is very interested in solar cells recently, and keeps asking me about the structure of a solar cell. Can anybody help me answer that question?

As a newly-developed power generation technology, solar cells are considered to be an evironmental-protecting green energy

Q:How about the current market price for the film solar?

The price for the film solar in the Chinese market is changed a lot due to the mass production of the film solar in a lot of factories.

Q:Where can I buy the 156x156mm high efficiency poly solar cells assembly?

156x156mm high efficiency poly solar cells assembly is usually very easy to get, all you need to do is to post your need online, and the suppliers will come to you.

Q:What are the advantages of monocrystalline silicon and polycrystalline silicon in solar power?

single The wafer hot process time can be completed in less than one minute, using the process to make a cell conversion efficiency of more than 14% on 100 square centimeters of polysilicon wafers. It is reported that the current 50 ~ 60 micron polysilicon substrate produced on the battery efficiency of more than 16%. The use of mechanical groove, screen printing technology in the 100 square centimeter polycrystalline efficiency of more than 17%,